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Proof step 1 from proof getInt-theorem (conclusion)

⊦ bor(bor(bor(b2i(by3) i<< 24, band(b2i(by2), 255) i<< 16), band(b2i(by1), 255) i<< 8), band(b2i(by0), 255)) = bytes2int(by3 ' + by2 ' + by1 ' + by0 ')

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ bor(bor(i, i0), j0) = bor(i, bor(i0, j0))
Proof step 3:
⊦ bor(bor(b2i(by3) i<< 24, bor(band(b2i(by2), 255) i<< 16, band(b2i(by1), 255) i<< 8)), band(b2i(by0), 255)) = bytes2int(by3 ' + by2 ' + by1 ' + by0 ')

Rule argument

seq: ⊦ bor(bor(i, i0), j0) = bor(i, bor(i0, j0)) subst: [j0, i0, i] → [band(b2i(by1), 255) i<< 8, band(b2i(by2), 255) i<< 16, b2i(by3) i<< 24] rotate: F spec: intops inst: name: bor-assoc

Additional information

Used terms: band(b2i(by1), 255) i<< 8, band(b2i(by2), 255) i<< 16, b2i(by3) i<< 24